The Well Integrity Blog by Wellcem Desert

Cement Plugging: A nightmare waiting to happen?

Posted by Miguel Diaz on 21.09.2017

A ghost from the past started hunting me when I went through my files. Ashamed of what I discovered I decided to tell everyone, especially young engineers, what not to do when setting a cement...

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Lab tests to review when designing a “gas-tight” cement slurry

Posted by Miguel Diaz on 13.09.2017

In last week's article, we discussed the mechanism of gas migration through a cement slurry. What we left for this week are the three most important lab tests to review when designing a...

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Gas tight slurries

Posted by Miguel Diaz on 06.09.2017

Following the article from my colleague, Svein Normann, on how gas migration during and after a cement job could lead to a catastrophic disaster, we received a significant amount of questions on...

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Resin curing process

Posted by Minli Xie on 28.08.2017

Resin chemistry, including epoxies, phenolics, and furans, has been widely utilized in a variety of applications in well construction, completion, and production. This broad class of thermosetting...

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How to deal with production wells breaking water

Posted by Barbro Ramstad on 21.08.2017

In this blogpost I will tell you how to deal with water produced in the well. Good and bad water and how to deal with it.

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Gas migration can cause a disaster

Posted by Svein Normann on 14.08.2017

Gas migration is a well-known phenomenon in oil and gas wells around the world. Probably because it is very common. You must know what it is and how it occurs.

 

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Plugging in depleted Reservoirs

Posted by Colin Beharie on 07.08.2017

Plugging depleted reservoirs can be a challenge. Many operators spend lots of money and effort to solve the associated P&As. Therefore, it is essential to identify the potential difficulties that...

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A simplistic approach to testing the cement before every job [from API10B2]

Posted by Miguel Diaz on 31.07.2017

In this second part of my article, I will cover the test procedures for cement slurries in different well applications.

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Standards you need to know when designing a cement slurry for oil well applications

Posted by Miguel Diaz on 26.07.2017

Have you ever wondered what tests you should (or could) ask the lab to run when you are preparing for a cement job? Have you ever been part of an argument around a lab test result because it was...

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Dealing with Micro-Annuli in Casing Cement

Posted by Colin Beharie on 17.07.2017

Micro annuli in cement are a constant problem in oilfield well cementing. It is one numerous well integrity problem that often results in production reduction and expensive remedial costs. There...

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